“altitude datum”的概念、定义、翻译、参考文献-科学参考

单词	altitude datum
释义	altitude datum [`al·tǝ´tüd ´dad·ǝm] ^ENGINEERING The arbitrary level from which heights are reckoned.
随便看	hydrometrograph hydrometry hydromica hydromorphic hydronephrosis hydronic heating hydronic radiation hydronium ion HYDROPAC hydropathy hydropericardium Hydrophiidae hydrophile-lipophile balance hydrophilic Hydrophilidae hydrophilite Hydrophiloidea hydrophilous hydrophobia hydrophobic hydrophobophobia hydrophone hydrophone array hydrophone noise hydrophone response

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